Trees and landscapes should be designed and installed to be sustainable -- to provide long-lasting beauty and utility through healthy growth that does not require unnecessary maintenance. However, as every arborist who has made an emergency call knows, this is often not the case. Replacement of poorly grown or improperly planted trees is commonplace. Most urban soils that support landscape trees remain in poor condition -- highly compacted and low in organic matter. The result is high plant mortality, higher rework ..